Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Reexamination Certificate
2011-08-09
2011-08-09
Shah, Paras (Department: 2626)
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
C704S219000, C704S220000, C704S207000, C704S501000, C704S200000, C704S200100
Reexamination Certificate
active
07996233
ABSTRACT:
A downsampler101converts input data having a sampling rate 2*FH to a sampling rate 2*FL which is lower than the sampling rate 2*FH. A base layer coder102encodes the input data having the sampling rate 2*FL in predetermined base frame units. A local decoder103decodes a first coded code. An upsampler104increases the sampling rate of the decoded signal to 2*FH. A subtractor106subtracts the decoded signal from the input signal and regards the subtraction result as a residual signal. A frame divider107divides the residual signal into enhancement frames having a shorter time length than that of the base frame. An enhancement layer coder108encodes the residual signal divided into the enhancement frames and outputs a second coded code obtained by this coding to a multiplexer109.
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Dickinson Wright PLLC
Panasonic Corporation
Shah Paras
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